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optimize matcher reset to not create unnecessary string objects

This commit is contained in:
Simon Willnauer 2013-03-30 15:50:36 +01:00
parent fefa8da2ea
commit e864d5785e
1 changed files with 15 additions and 9 deletions
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20
src/main/java/org/elasticsearch/search/facet/terms/strings/TermsStringOrdinalsFacetExecutor.java
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@ -22,7 +22,9 @@ package org.elasticsearch.search.facet.terms.strings;
import com.google.common.collect.ImmutableSet;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.CharsRef;
import org.apache.lucene.util.PriorityQueue;
import org.apache.lucene.util.UnicodeUtil;
import org.elasticsearch.common.CacheRecycler;
import org.elasticsearch.common.collect.BoundedTreeSet;
import org.elasticsearch.index.fielddata.BytesValues;
@ -50,7 +52,6 @@ public class TermsStringOrdinalsFacetExecutor extends FacetExecutor {
private final TermsFacet.ComparatorType comparatorType;
private final int size;
private final int numberOfShards;
private final int minCount;
private final ImmutableSet<BytesRef> excluded;
private final Matcher matcher;
@ -65,7 +66,6 @@ public class TermsStringOrdinalsFacetExecutor extends FacetExecutor {
this.indexFieldData = indexFieldData;
this.size = size;
this.comparatorType = comparatorType;
this.numberOfShards = context.numberOfShards();
this.ordinalsCacheAbove = ordinalsCacheAbove;
if (excluded == null || excluded.isEmpty()) {
@ -92,8 +92,8 @@ public class TermsStringOrdinalsFacetExecutor extends FacetExecutor {
@Override
public InternalFacet buildFacet(String facetName) {
final CharsRef spare = new CharsRef();
AggregatorPriorityQueue queue = new AggregatorPriorityQueue(aggregators.size());
for (ReaderAggregator aggregator : aggregators) {
if (aggregator.nextPosition()) {
queue.add(aggregator);
@ -124,10 +124,13 @@ public class TermsStringOrdinalsFacetExecutor extends FacetExecutor {
if (excluded != null && excluded.contains(value)) {
continue;
}
// LUCENE 4 UPGRADE: use Lucene's RegexCapabilities
if (matcher != null && !matcher.reset(value.utf8ToString()).matches()) {
if (matcher != null) {
UnicodeUtil.UTF8toUTF16(value, spare);
assert spare.toString().equals(value.utf8ToString());
if (!matcher.reset(spare).matches()) {
continue;
}
}
InternalStringTermsFacet.TermEntry entry = new InternalStringTermsFacet.TermEntry(value, count);
ordered.insertWithOverflow(entry);
}
@ -167,10 +170,13 @@ public class TermsStringOrdinalsFacetExecutor extends FacetExecutor {
if (excluded != null && excluded.contains(value)) {
continue;
}
// LUCENE 4 UPGRADE: use Lucene's RegexCapabilities
if (matcher != null && !matcher.reset(value.utf8ToString()).matches()) {
if (matcher != null) {
UnicodeUtil.UTF8toUTF16(value, spare);
assert spare.toString().equals(value.utf8ToString());
if (!matcher.reset(spare).matches()) {
continue;
}
}
InternalStringTermsFacet.TermEntry entry = new InternalStringTermsFacet.TermEntry(value, count);
ordered.add(entry);
}